Update dev dependencies.

Includes a workaround for a TypeScript v4.8.2 bug: microsoft/TypeScript#50286 .

Author: jaydenseric

changelog.md

@@ -4,6 +4,7 @@
 
 ### Patch
 
+- Updated dev dependencies.
 - Added missing readme “Installation” section import map instructions for [`is-plain-obj`](https://npm.im/is-plain-obj).
 - Added [Browserslist](https://browsersl.ist) links to the readme.
 

package.json

@@ -105,14 +105,14 @@
     "react-waterfall-render": "^4.0.1"
   },
   "devDependencies": {
-    "@types/node": "^18.6.3",
-    "@types/react": "^18.0.15",
+    "@types/node": "^18.7.13",
+    "@types/react": "^18.0.17",
     "@types/react-dom": "^18.0.6",
     "@types/react-test-renderer": "^18.0.0",
     "abort-controller": "^3.0.0",
-    "coverage-node": "^6.1.0",
-    "esbuild": "^0.14.53",
-    "eslint": "^8.21.0",
+    "coverage-node": "^8.0.0",
+    "esbuild": "^0.15.5",
+    "eslint": "^8.23.0",
     "eslint-plugin-react-hooks": "^4.6.0",
     "eslint-plugin-simple-import-sort": "^7.0.0",
     "event-target-shim": "^6.0.2",
@@ -123,9 +123,9 @@
     "react": "^18.2.0",
     "react-dom": "^18.2.0",
     "react-test-renderer": "^18.2.0",
-    "revertable-globals": "^3.0.0",
-    "test-director": "^8.0.2",
-    "typescript": "^4.7.4"
+    "revertable-globals": "^4.0.0",
+    "test-director": "^10.0.0",
+    "typescript": "^4.8.2"
   },
   "scripts": {
     "eslint": "eslint .",

test/polyfills/CustomEvent.mjs

@@ -4,16 +4,20 @@ if (!("CustomEvent" in globalThis))
   globalThis.CustomEvent =
     /**
      * `CustomEvent` polyfill.
-     * @type {typeof globalThis.CustomEvent}
+     * @template [T=unknown]
+     * @type {globalThis.CustomEvent<T>}
      */
-    class CustomEvent extends globalThis.Event {
+    class CustomEvent extends Event {
       /**
        * @param {string} type Event type.
-       * @param {CustomEventInit} [eventInitDict] Custom event options.
+       * @param {CustomEventInit<T>} [options] Custom event options.
        */
-      constructor(type, { detail, ...eventOptions } = {}) {
+      constructor(type, options = {}) {
+        // Workaround a TypeScript bug:
+        // https://github.com/microsoft/TypeScript/issues/50286
+        const { detail, ...eventOptions } = options;
         super(type, eventOptions);
-        this.detail = detail;
+        if (detail) this.detail = detail;
       }
 
       /** @deprecated */